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Van der Waals resonant tunnel diodes (vdW RTD) with an N-shaped current-voltage characteristic make it possible to develop a highly efficient element base for information processing and transmission systems. The behavior of vdW RTDas a dynamicsystemsignificantlydependson the totalresistanceRof graphenelayers andmetalcontactstothem and the minimumabsolutevalue of the negativedifferentialresistance RN of the current-voltage characteristic ofvdWheterojunction. The systemcanperform the function of a generatoratRN≫Ror a triggeratRN≪R.Thesecases have been fullyinvestigated. The case of RN<R has not been sufficientlyinvestigated,especiallyatR ≈ RN,whenvdW RTDas a dynamicsystemmayhave the properties of a triggerandgenerator. In this work, the “mixed” mode for the current-voltage characteristic of the vdW heterojunction represented by the cubic trinomial is investigated. The methods of the qualitative theory of differential equations were used. It has been demonstrated that the experimental current-voltage characteristic of the vdW RTD at RN<R has a rectangular loop and, in case of self-oscillation, may additionally have an inclined “shelf”. A method for reconstructing the real current-voltage characteristic of the vdW heterojunction based on the characteristic parameters of the experimental current-voltage characteristic of the vdW RTD is proposed. The obtained results for the current-voltage characteristic of the vdW heterojunction in the form of a cubic trinomial can be applied to real vdW RTDs by approximating the incident part of the current-voltage characteristic of the vdW heterojunction with a cubic trinomial. The results obtained can serve as an addition to the theory and design of circuits containing tunnel diodes (TD circuits).

Key words: 2D electronics, graphene, tunneling devices, resonant tunneling heterojunctions, N-shaped current-voltage characteristic, dynamic system, phase portrait of system, limit cycle, singular point, trigger, generator
Published in: Integral electronics elements
Bibliography link: Il’ichev E. A., Petrukhin G. N., Rychkov G. S., Demidova A. N., Korlyakov D. A. Investigation of the VanderWaals resonant tunnel diode in a mode combining the functions of a trigger and a generator. Izv.vuzov. Elektronika = Proc. Univ. Electronics. 2025;30(4):451–468. (InRuss.).https://doi.org/10.24151/1561-5405-2025-30-4-451-468.
Financial source: this work was carried out with support from budget resources via state assignment FSMR-2023-0003

Eduard A. Il’ichev
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

Georgiy N. Petrukhin
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

Gennady S. Rychkov
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

Anastasia N. Demidova
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

Dmitry A. Korlyakov
National Research University of Electronic Technology (Russia, 124498, Moscow, Zelenograd, Shokin sq., 1)

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Information about the publication

UDK: 621.382.2
Publication type: Scientific article
Source lang: Russian
DOI: 10.24151/1561-5405-2025-30-4-451-468
RISC id: BFZLSQ

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